Sea quark transverse momentum distributions and dynamical chiral symmetry breaking
Conference
·
· International Journal of Modern Physics: Conference Series
- Univ. of Connecticut, Storrs, CT (United States)
- Penn State Univ., State College, PA (United States)
- JLAB Newport News, VA (United States)
Recent theoretical studies have provided new insight into the intrinsic transverse momentum distributions of valence and sea quarks in the nucleon at a low scale. The valence quark transverse momentum distributions (q - qbar) are governed by the nucleon's inverse hadronic size R{sup -1} ~ 0.2 GeV and drop steeply at large p{sub T}. The sea quark distributions (qbar) are in large part generated by non-perturbative chiral-symmetry breaking interactions and extend up to the scale rho{sup -1} ~ 0.6 GeV. These findings have many implications for modeling the initial conditions of perturbative QCD evolution of TMD distributions (starting scale, shape of p{sub T}. distributions, coordinate-space correlation functions). The qualitative difference between valence and sea quark intrinsic p{sub T}. distributions could be observed experimentally, by comparing the transverse momentum distributions of selected hadrons in semi-inclusive deep-inelastic scattering, or those of dileptons produced in pp and pbar-p scattering.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC) (United States)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1116336
- Report Number(s):
- JLAB-THY--13-1785; DOE/OR--23177-2730; arXiv:1309.2990
- Conference Information:
- Journal Name: International Journal of Modern Physics: Conference Series Journal Volume: 25
- Country of Publication:
- United States
- Language:
- English
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